<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    *{
        list-style: none;
    }
    .ul{
        width: 300px;
        height: 100px;
        display: flex;
        border: 1px solid #000;
        justify-content: space-between;
    }
    .active{
        background-color: antiquewhite;
    }
</style>
<body>
    <ul class="ul">
        <li>1</li>
        <li>2</li>
        <li>3</li>
        <li>4</li>
    </ul>
    <script>
        
    </script>
</body>
</html>